* {
	margin: 0;
	padding: 0;
}

.calculator-wrap {
	width: 252px;
	height: auto;
	overflow: hidden;
	border: #fff 1px solid;
	margin: 20px auto;
}

.calculator-wrap div {
	clear: both;
}

.calcu-screen {
	background: #F8F8F8;
	border: 1px solid #eee;
}

.calcu-btn {
	padding: 0;
	height: auto;
	overflow: hidden;
	background: #364254;
	color: #fff;
}

.calcu-btn input {
	width: 50px;
	height: 64px;
	outline: none;
	display: inline-block;
	line-height: 64px;
	font-size: 16px;
	background: #eaeaea;
	border: none;
	border-right: 1px solid #48586f;
	border-bottom: 1px solid #48586f;
	background: #364254;
	color: #fff;
	box-sizing: border-box;
    text-shadow: 1px 1px 5px #000;
    float: left;
}

.calcu-btn input.tool {
	background-color: #414e63;
}

.calcu-btn input:hover {
	background-color: #2DC3E8;
	cursor: pointer;
}

.calcu-btn input:active {
	background-color: #2CB4D9;
	cursor: pointer;
	color: #fff;
}

.calcu-btn input.tool:active {
	background-color: #2CB4D9;
	cursor: pointer;
}

.calcu-screen {
	padding: 0 0 12px 0;
}

.screen {
	width: 235px;
	height: 32px;
	line-height: 32px;
	padding: 5px 0;
	margin: 0 auto;
	direction: ltr;
	text-align: right;
	font-size: 24px;
	color: #000;
	text-shadow: 1px 1px 3px #aaa;
}

.calcu-screen .numScreenSave {
	font-size: 18px;
	white-space: nowrap;
	font-family: "Microsoft Yahei";
}

.calcu-screen .numScreen {
	border: none;
	background: none;
	font-family: "Microsoft Yahei";
}
.calcu-screen .numScreen:focus{
    border: none;
    outline: none;
}